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Breeding and propagation method of schizothorax prenati

A technique for cultivating ponds of Schizothorax and broodstock, which is applied in the field of aquaculture, can solve the problems of seedling production that is difficult to meet the needs of aquaculture, induced spawning rate, low fertilization rate and hatching rate, and achieves the effect of improving the effect of artificial reproduction

Inactive Publication Date: 2018-01-19
SOUTHWEST UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing artificial reproduction technology of Schizothorax is still in its infancy, its induced labor rate, fertilization rate, and hatching rate are low, and seed production is difficult to meet the breeding needs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] In 2015, a farm in the northeast of Chongqing, the specific implementation steps are as follows:

[0022] 1. Build an imitation ecological broodstock breeding pond

[0023] Choose a place where the water source is convenient, and build a rectangular broodstock breeding pond with a length of 10m, a width of 5m, and a depth of 2m. The drop is about 0.3m. At the bottom of the pool at the water outlet, use stone to build rows of caves parallel to the long axis of the cultivation pool (build a series of water tanks with stone materials, the water tanks are parallel to the long axis of the cultivation pool, and the top is covered with stone slabs to form artificial underwater caves), each cave The length is 3m, the width is 0.5m, and the height is 0.4m. The bottom of the cave is paved with pebbles, and the water surface of the cultivation pool is covered with sunshades to create a natural habitat for Schizothorax.

[0024] 2. Stocking broodstock in running water

[0025] C...

Embodiment 2

[0032] In 2016, a farm in the southeast of Chongqing, the specific implementation steps are as follows:

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PUM

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Abstract

The invention discloses a breeding and propagation method of schizothorax prenati. The method comprises the following steps of 1, building a parent fish breeding pond; 2, using running water to stockparent fish, wherein 3-5 day-old healthy schizothorax prenati is selected as the parent fish, and the parent fish is placed into the parent fish breeding pond to be stocked in the running water; 3, conducting artificial spawning induction on the parent fish, wherein March to May serves as a propagation season, the water temperature reaches 9-15 DEG C, and the parent fish with high gonadal maturityare subjected to spawning induction; 4, conducting artificial insemination and incubation. According to the breeding and propagation method of schizothorax prenati, a natural habitat environment of schizothorax prenati is simulated in the breeding pond for breeding the parent fish, artificial spawning induction, insemination and incubation are conducted, the spawning induction rate of the male parent fish reaches 85% or above, the fertility rate is around 90%, the incubation rate is around 80%, and the breeding and propagation method is superior to other methods for propagating schizothorax prenati, and is very significant in improving the artificial propagation effect of schizothorax prenati.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a method for cultivating and propagating Schizothorax chinensis. Background technique [0002] Schizothorax is an important economic fish unique to the upper reaches of the Yangtze River. Its meat is tender, delicious and nutritious. 5-27°C. Due to overfishing and habitat changes, the number of wild Schizothorax has declined sharply, while artificial breeding is restricted by seed breeding technology. The existing Schizothorax artificial propagation technology is still in its infancy, and its induced spawning rate, fertilization rate, and hatching rate are low, and seed production is difficult to meet the breeding needs. Contents of the invention [0003] In order to solve the problems in the prior art, an embodiment of the present invention provides a method for cultivating and propagating Schizothorax. Described technical scheme is as follows: [0004] On the one hand...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/10
CPCY02A40/81
Inventor 丁诗华顾正选许超王伟孙翰昌
Owner SOUTHWEST UNIVERSITY
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